Rosemary vs Sweet Pea

Side-by-side plant comparison — which is right for your garden?

Rosemary

Salvia rosmarinus

Lamiaceae · herbs

EdibleDeer ResistantDrought TolerantLow Maintenance

Sweet Pea

Lathyrus odoratus

Fabaceae · flowers

Deer ResistantMedium Maintenance

Hardiness Zone Range

Rosemary (Zones 7-10)

Sweet Pea (Zones 2-11)

Overlap: Both grow in zones 7–10

Detailed Comparison

Feature	Rosemary	Sweet Pea
Scientific Name	Salvia rosmarinus	Lathyrus odoratus
Family	Lamiaceae	Fabaceae
Category	herbs	flowers
Sun	☀️ Full Sun	☀️ Full Sun
Water	💧 Low	💧💧 Medium
Soil	Well-drained, Sandy	Rich, Well-drained
Height	4'	6'
Spread	3'	1'
Bloom Season	Spring	Spring-Summer
Bloom Color	Blue, Purple	Mixed
Growth Rate	Medium	Fast
Native Region	Mediterranean	Italy, Sicily
Maintenance	Low	Medium

Special Traits

Rosemary

Yes — EdibleYes — Deer ResistantYes — Drought Tolerant

Sweet Pea

No — EdibleYes — Deer ResistantNo — Drought Tolerant

Care Tips

Rosemary

✓Requires excellent drainage — root rot is the main killer.
✓Don't overwater.
✓Prune after flowering to maintain shape.
✓Can be trained as topiary or hedge.

Sweet Pea

✓Soak seeds overnight before planting.
✓Provide trellis or netting.
✓Pick flowers frequently to prolong bloom.
✓Needs cool weather — plant early spring or fall in warm areas.

Which Plant Is Right for Your Garden?

Choose Rosemary if you want a low-maintenance plant, need drought tolerance, and want deer resistance. It thrives in full sun with low water in zones 7–10.

Choose Sweet Pea if you don't mind medium maintenance, and want deer resistance. It thrives in full sun with medium water in zones 2–11.

Plant them together? Both overlap in zones 7–10. They share similar sun requirements (full sun), making them potential garden companions.

View RosemaryProfile →View Sweet PeaProfile →

Frequently Asked Questions

Can Rosemary and Sweet Pea grow in the same hardiness zone?

Rosemary grows in USDA zones 7-10, while Sweet Pea grows in zones 2-11. Both plants can grow together in zones 7 through 10.

Do Rosemary and Sweet Pea have the same sun and water needs?

Rosemary needs full sun and low water, while Sweet Pea needs full sun and medium water. Their differing requirements mean you may need separate garden areas for each.

Which grows taller, Rosemary or Sweet Pea?

Sweet Pea grows taller at 6' compared to Rosemary at 4'. Sweet Pea spreads 1' while Rosemary spreads 3'.

Are Rosemary and Sweet Pea deer resistant?

Yes, both Rosemary and Sweet Pea are considered deer resistant, making them excellent choices for gardens in areas with deer pressure.

Which is easier to maintain, Rosemary or Sweet Pea?

Rosemary has low maintenance while Sweet Pea has medium maintenance. Rosemary may be easier for beginning gardeners to manage.

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Detailed Comparison

Feature	Rosemary	Sweet Pea
Scientific Name	Salvia rosmarinus	Lathyrus odoratus
Family	Lamiaceae	Fabaceae
Category	herbs	flowers
Sun	☀️ Full Sun	☀️ Full Sun
Water	💧 Low	💧💧 Medium
Soil	Well-drained, Sandy	Rich, Well-drained
Height	4'	6'
Spread	3'	1'
Bloom Season	Spring	Spring-Summer
Bloom Color	Blue, Purple	Mixed
Growth Rate	Medium	Fast
Native Region	Mediterranean	Italy, Sicily
Maintenance	Low	Medium

Care Tips

Rosemary

✓Requires excellent drainage — root rot is the main killer.
✓Don't overwater.
✓Prune after flowering to maintain shape.
✓Can be trained as topiary or hedge.

Sweet Pea

✓Soak seeds overnight before planting.
✓Provide trellis or netting.
✓Pick flowers frequently to prolong bloom.
✓Needs cool weather — plant early spring or fall in warm areas.

Which Plant Is Right for Your Garden?

Choose Rosemary if you want a low-maintenance plant, need drought tolerance, and want deer resistance. It thrives in full sun with low water in zones 7–10.

Choose Sweet Pea if you don't mind medium maintenance, and want deer resistance. It thrives in full sun with medium water in zones 2–11.

Plant them together? Both overlap in zones 7–10. They share similar sun requirements (full sun), making them potential garden companions.

Frequently Asked Questions

Can Rosemary and Sweet Pea grow in the same hardiness zone?

Rosemary grows in USDA zones 7-10, while Sweet Pea grows in zones 2-11. Both plants can grow together in zones 7 through 10.

Do Rosemary and Sweet Pea have the same sun and water needs?

Rosemary needs full sun and low water, while Sweet Pea needs full sun and medium water. Their differing requirements mean you may need separate garden areas for each.

Which grows taller, Rosemary or Sweet Pea?

Sweet Pea grows taller at 6' compared to Rosemary at 4'. Sweet Pea spreads 1' while Rosemary spreads 3'.

Are Rosemary and Sweet Pea deer resistant?

Yes, both Rosemary and Sweet Pea are considered deer resistant, making them excellent choices for gardens in areas with deer pressure.

Which is easier to maintain, Rosemary or Sweet Pea?

Rosemary has low maintenance while Sweet Pea has medium maintenance. Rosemary may be easier for beginning gardeners to manage.